Scottish scientist cloned Dolly from another sheep in 1997. They took an egg cell from a sheep (Mom 1) and removed and discarded the nucleus. They took an udder cell nucleus, that was diploid, from a different sheep (Mom 2). They inserted the nucleus into the egg cell and made this new cell undergo mitosis. They implanted the dividing cell into a surrogate mother (MOM 3). Several months later, Dolly was born. Dolly was actually a clone of which sheep?
a) Mom 1
b) Mom 2
c) Mom 3
d) there is not enough information given to answer this question
Ans: b) Mom 2
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Diabetics can be given the ____ insulin which binds to receptors on cells throughout the body increasing glucose uptake.
A. hormone B. transcription factor C. G-protein D. kinase E. response element
Which structure is the major site of antibody production and a disposal site for old red blood cells?
a. Thymus b. Spleen c. Lymph vessels d. Tonsils e. Bone marrow
Given ? = 2, what would the intrinsic rate of reproduction (r) be?
A) 4 B) 0.69 C) 1 D) 0
DNA nucleotide sequences that indicate when RNA polymerase should finish making an RNA molecule are called
A. enhancer sequences. B. elongation sequences. C. genetic recombinant sequences. D. termination sequences.